[Thiez]

I see your point, but the current system encourages states to use a winner-takes-all system because it maximizes the influence of that state, which is hardly ideal. It'd be a shame to pass up on a good system (or one that is better than the one you are using now, in my opinion) just so you can forever experiment around with individual states. "Perfect" is the enemy of "good" and all that.

[taejo]

You can also prevent the tragedy of the commons, without federal interference, through an inter-state compact (basically a treaty/contract between states).